Right. Any router can claim that it has the best route to somewhere. So interception and blackholing are trivial. But there's huge inertia from providers. Partly it's just sunk cost. And also reluctance to add traffic overhead and management complexity. It reminds me of arguments against HTTPS.
It seems obvious to me that the only solution that lets me "sleep well at night", would be all my traffic passing in encrypted tunnels. I basically plan on their routers, switches, and for sure any backbone, as having a full monitor on passing traffic. The backbone privledged position is too strong to go any other way for me. My .02.
